Well, in some Harry Potter pirate fanfiction, there might be a plot where pirates from the wizarding world raid the Ministry of Magic to steal a powerful magical artifact. They could use enchanted ships and pirate magic to break through the defenses. Or perhaps a story where a group of pirate - like Death Eaters try to take over Hogwarts and the students have to fight back using both their regular magic and some pirate - inspired tactics they learn along the way.
One idea could be a pirate crew made up of Hogwarts students who go on a quest to find a magical treasure hidden by an ancient wizard - pirate. They'd use their magic in unique ways on the high seas. Another could be a story where Harry discovers a long - lost relative who was a pirate and inherits a magical pirate ship. The ship has its own secrets and powers.
A great plot for a Potter Manor fanfiction could involve a mystery that surrounds the manor. For instance, strange noises at night lead Harry to uncover a long - forgotten chamber. It could also be about Harry restoring the manor to its former glory, perhaps with the help of Hermione's research on ancient magic used in the construction of such manors.
One idea could be that Tinkerbell discovers a hidden map in Pixie Hollow that leads to a long - lost pirate treasure. Along the way, she teams up with some of the pirate fairies and they face various challenges like tricky sea creatures and bad - weather magic. Another plot could be that a new pirate fairy arrives in Pixie Hollow with a mysterious power that Tinkerbell has to figure out whether it's good or bad for their world. Maybe this new fairy is being chased by an old enemy from the pirate world and Tinkerbell gets caught in the middle.
One idea could be that Percy and Annabeth are on a pirate ship, and they discover a hidden treasure map. They have to battle other pirates and sea monsters to reach the treasure. Another could be that they are pirates who are trying to free a group of captured demigods. A third idea is that they are pirates on a quest to find a magical artifact that can control the seas.
Maybe there's a young Naruto - inspired character who dreams of being a pirate but is trained as an assassin in a hidden village. He stows away on a pirate ship and has to use his assassin skills to survive among the pirates. Along the way, he discovers a conspiracy within the pirate crew and uses his Naruto - style abilities to expose it and become a hero among the pirates. For example, his ability to run up walls could help him escape dangerous situations on the ship.
One idea could be Percy discovers a hidden pirate ship in the middle of Camp Half - Blood's lake. The ship is cursed and Percy has to team up with some pirate ghosts to break the curse. Another could be that Percy is transported back in time to the golden age of piracy and has to find his way back while dealing with pirate villains and sea monsters.
One idea could be a pirate captain who discovers a mermaid in his ship's hold. She was captured by his crew thinking she was a good luck charm. The pirate, against his tough exterior, starts to feel sympathy for her and tries to protect her from his more superstitious and cruel crew members.
A great plot idea could be a female pirate character who is wrongly accused of piracy in the Ace Attorney court system. She claims she was only defending herself against a group of corrupt sailors who were attacking her. The Ace Attorney protagonist has to fight against the prejudice of the court towards pirates and prove her innocence. Another plot could be a situation where a pirate ship docks at a port in the Ace Attorney world, and a murder occurs on the ship. The local authorities try to pin the crime on the pirates, but the Ace Attorney character realizes that there are many other suspects on the dock who had motives to commit the murder.
One interesting plot idea could be exploring what would happen if Harry had a different upbringing, like being raised by the Malfoys. It would completely change his view of the wizarding world and his relationships. Another idea might be a time - travel fanfic where Harry goes back to the Marauders' era and interacts with his parents and their friends. This could lead to him preventing certain tragedies or changing the future in unexpected ways. And then there's the concept of a fanfic where the roles are reversed, and Voldemort is the one trying to protect the wizarding world from a greater evil, with Harry being the main antagonist.
One idea could be an accountant at Gringotts who discovers a financial conspiracy within the wizarding world. Maybe they find that certain dark wizards are using illegal accounting spells to siphon off gold from vaults.
Another idea could be that the pretender is an impostor who has infiltrated Hogwarts with an ulterior motive. Maybe they are working for a dark wizard and are trying to steal powerful magical artifacts from the school. This would create a lot of tension and mystery as the characters try to figure out who the pretender really is and what their plans are.